US6648111B2 - Positive rotating anchor pin - Google Patents
Positive rotating anchor pin Download PDFInfo
- Publication number
- US6648111B2 US6648111B2 US10/010,367 US1036701A US6648111B2 US 6648111 B2 US6648111 B2 US 6648111B2 US 1036701 A US1036701 A US 1036701A US 6648111 B2 US6648111 B2 US 6648111B2
- Authority
- US
- United States
- Prior art keywords
- brake
- anchor pin
- brake assembly
- assembly according
- recess
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 241000239290 Araneae Species 0.000 claims abstract description 28
- 230000013011 mating Effects 0.000 claims abstract description 3
- 230000000295 complement effect Effects 0.000 claims 1
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- QLMNCUHSDAGQGT-UHFFFAOYSA-N sintofen Chemical compound N1=C(C(O)=O)C(=O)C=2C(OCCOC)=CC=CC=2N1C1=CC=C(Cl)C=C1 QLMNCUHSDAGQGT-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
- F16D65/04—Bands, shoes or pads; Pivots or supporting members therefor
- F16D65/08—Bands, shoes or pads; Pivots or supporting members therefor for internally-engaging brakes
- F16D65/09—Pivots or supporting members therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D51/00—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like
- F16D51/16—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis
- F16D51/18—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes
- F16D51/20—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes extending in opposite directions from their pivots
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D51/00—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like
- F16D51/16—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis
- F16D51/18—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes
- F16D51/20—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes extending in opposite directions from their pivots
- F16D51/22—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes extending in opposite directions from their pivots mechanically actuated
Definitions
- This invention relates to a commercial vehicle brake assembly, and more particularly, the invention relates to an anchor pin for supporting the brake shoes of the brake assembly.
- Heavy duty brake assemblies typically used on commercial vehicles commonly incorporate a pair of opposing arcuate brake shoes.
- the brake shoes may be actuated by an actuating member such as an S-cam manipulated by a pneumatic cylinder to force the brake shoes into an engagement with the interior surface of a brake drum.
- the ends of the brake shoe opposite the S-cam are supported on a brake spider by anchor pins.
- the pins define pivot points about which the shoes rotate.
- the anchor pins are received in holes in the spider and extend therefrom to support the brake shoe ends.
- the brake shoes rotate about the pivot point define by the anchor pin. It is desicreable for the achor pin to rotate with the hole in the spider so that the anchor pin does not bond to the spider as a result of corrosion. That is, it is believed that rotation of the anchor pin within the spider extends the life of the pins and reduces the service to the brake assembly. However, the rotation of the brake shoe about the anchor pin pivot does not always result in the anchor pin rotating within the spider, and the anchor pin frequently corrodes to the spider resulting in increased wear.
- Anchor pins are typically designed for the worse case scenario throughout a manufacturer's brake assembly product line.
- Prior art brake assembly typically include a cylindrical central portion and a pair of opposing smaller diameter cylindrical end portions extending from either side of the central portion. The central portion is received within the-hole in the spider and the end portions extend beyond the spider to support the brake shoes. The central portion creates a shoulder by which the brake shoe retains the anchor pin within the spider. Since the anchor pins are designed for a worse case scenario, weight and cost is added to the brake assemblies due to the larger than necessary pins and spider. Therefore, what is needed is a smaller anchor pin that rotates within the spider hole in response to manipulation of the brakes shoes.
- the present invention provides a brake spider with a hole.
- An anchor pin is supported within the hole and includes end portions extending from the spider.
- the end portion has a first interlocking profile, which may be a recess or flat in the outer cylindrical surface of the anchor pin.
- the cylindrical surface extends preferably to the terminal ends of the pin. That is, the anchor pin has a generally uniform diameter across its length excluding the areas in which the recess or flat is arranged.
- a brake shoe includes a web having an aperture.
- the end portion of the anchor pin is at least partially disposed within the aperture.
- the aperture has a second interlocking profile complimentary to and mating with the first interlocking profile of the anchor pin to prevent relative rotation between the web and the end portion.
- the anchor pin will rotate within the hole of the spider in response to actuation of the brake shoes. Said in another way, the brake shoe and anchor pin will rotate in unison about the pivot point defined by the anchor pin to ensure the pin does not bond to the spider.
- the above invention provides a smaller anchor pin that rotates within the spider hole in response to manipulation of the brakes shoes.
- FIG. 1 is a top elevational view of the present invention brake assembly
- FIG. 2 is a cross-sectional view of the brake shoe and anchor pin taken along line 2 — 2 of FIG. 1;
- FIG. 3A is an end view of the anchor pin
- FIG. 3B is a side elevational view of the anchor pin shown in FIG. 3A.
- FIG. 3C is a top elevational view of the anchor pin shown in FIG. 3 A.
- FIG. 1 A brake assembly 10 for a heavy duty commercial vehicle is shown in FIG. 1 .
- the brake assembly 10 includes a brake spider 12 having a plurality of holes 11 for receiving fasteners that secure the spider 12 to a brake flange of an axle.
- the assembly 10 also typically includes dust shields 14 secured to the brake flange to prevent debris from entering the brake assembly.
- the spider 12 includes a pair of holes 16 having a bushing 17 pressed in each hole 16 .
- Anchor pins 18 are received within the holes 16 and define pivot points about which the shoes 20 rotate during actuation of the brakes.
- the brake shoe 20 is supported on each of the anchor pins 18 .
- the brake shoes 20 include a brake lining 22 that engages a brake drum during braking.
- the lining 22 is supported by a pair of spaced apart webs 24 having apertures 26 at one end of the web.
- the apertures 26 may be notches in the end of the web 24 , as shown.
- a retaining spring 28 is arranged between the brake shoes 20 to retain the shoes 20 on the anchor pins 18 .
- An end 30 of the web 24 opposite the anchor pins 18 are supported by rollers 32 received by an S-cam 34 .
- the S-cam 34 is rotated by a pneumatic cylinder to rotate the shoes 20 about the anchor pins 18 forcing the lining 22 into engagement with the brake drum.
- a return spring 36 arranged between the brake shoes retracts the shoes 20 from the brake drum when the S-cam 34 is deactuated.
- the anchor pins 18 have a cylindrical outer surface 38 with a first interlocking profile 40 defined by a recess 44 .
- the recess 44 which may be opposing flats, are arranged on the end portions 46 of the anchor pins 18 .
- the flats 44 are of a length L less then the diameter D of the anchor pin 18 .
- the recesses 44 may extend to the terminal ends 48 of the pin 18 .
- Each end portion 46 is shown with opposing recesses or flats 44 . Only one recess is used while the other recess remains unused. Providing a recess 44 on either side of the end portion 46 simplifies assembly of the brake assembly.
- the cylindrical outer surface 38 of the anchor pin 18 extends to the terminal ends 48 of the pin 18 except for the portions having the recess 44 .
- the recess 44 provides a shoulder 50 .
- the portion of the anchor pin between the shoulders 50 are received in the hole 16 of the spider 12 .
- the webs 24 are supported on the recesses 44 on either side of the anchor pin 18 by the apertures 26 . Te webs 24 are adjacent shoulders 50 and retain the pins 18 within the holes 16 . As a result, a large central portion is not needed and a smaller pin and spider may be used.
- the apertures 26 have a second interlocking profile that is complimentary to the first interlocking profile 40 on the pin 18 .
- the aperture 26 has a corresponding flat feature engaging the flat on the pin 18 . In this manner, the shoe 20 will rotate the pin 18 within the hole 16 . That is, the interlocking profiles 40 and 42 rotationally retain the web 24 and pin 18 to one another for rotation in unison about the pivot.
- the interlocking profiles 40 and 42 prevent relative rotation between the web and the end portion 46 of the pin 18 .
- the shoe 20 positively rotates the anchor pin 18 within the hole 16 of the spider 12 to prevent corrosion of the pin 18 within the spider hole 16 and extends the overall life of the brake assembly 10 .
- actuation of the S-cam 34 generates a load vector V on the anchor pin 18 .
- the end portions 46 carry the load of the load vector V.
- the load vector V is distributed on the cylindrical outer surface 38 .
- the shoulders 50 created by the recesses 44 eliminate the need for the prior art large central portion.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
Description
Claims (12)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/010,367 US6648111B2 (en) | 2001-12-06 | 2001-12-06 | Positive rotating anchor pin |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/010,367 US6648111B2 (en) | 2001-12-06 | 2001-12-06 | Positive rotating anchor pin |
Publications (2)
Publication Number | Publication Date |
---|---|
US20030106750A1 US20030106750A1 (en) | 2003-06-12 |
US6648111B2 true US6648111B2 (en) | 2003-11-18 |
Family
ID=21745420
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/010,367 Expired - Fee Related US6648111B2 (en) | 2001-12-06 | 2001-12-06 | Positive rotating anchor pin |
Country Status (1)
Country | Link |
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US (1) | US6648111B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9004244B2 (en) | 2013-03-14 | 2015-04-14 | Arvinmeritor Technology, Llc | Brake assembly with improved brake shoe retention |
US9945434B2 (en) * | 2016-03-15 | 2018-04-17 | Arvinmeritor Technology, Llc | Brake assembly with anchor pin retention |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9133898B2 (en) * | 2013-08-16 | 2015-09-15 | Bendix Spicer Foundation Brake Llc | Heavy duty stamped spider |
DE102015220049A1 (en) * | 2015-10-15 | 2017-04-20 | Continental Teves Ag & Co. Ohg | Brake shoe return spring for a motor vehicle internal brake |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4353442A (en) * | 1979-10-15 | 1982-10-12 | Bendix Do Brasil Equipamentos Para Autoveiculos Ltda. | Brake shoe and brake assembly for automotive vehicles |
US4573557A (en) * | 1983-10-05 | 1986-03-04 | General Motors Corporation | Drum brake |
US4679667A (en) * | 1985-10-28 | 1987-07-14 | Dana Corporation | Anchor pin retainer |
-
2001
- 2001-12-06 US US10/010,367 patent/US6648111B2/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4353442A (en) * | 1979-10-15 | 1982-10-12 | Bendix Do Brasil Equipamentos Para Autoveiculos Ltda. | Brake shoe and brake assembly for automotive vehicles |
US4573557A (en) * | 1983-10-05 | 1986-03-04 | General Motors Corporation | Drum brake |
US4679667A (en) * | 1985-10-28 | 1987-07-14 | Dana Corporation | Anchor pin retainer |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9004244B2 (en) | 2013-03-14 | 2015-04-14 | Arvinmeritor Technology, Llc | Brake assembly with improved brake shoe retention |
US9534648B2 (en) | 2013-03-14 | 2017-01-03 | Arvinmeritor Technology, Llc | Brake assembly with improved brake shoe retention |
US9945434B2 (en) * | 2016-03-15 | 2018-04-17 | Arvinmeritor Technology, Llc | Brake assembly with anchor pin retention |
US10352380B2 (en) | 2016-03-15 | 2019-07-16 | Arvinmeritor Technology, Llc | Brake assembly with anchor pin retention |
Also Published As
Publication number | Publication date |
---|---|
US20030106750A1 (en) | 2003-06-12 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: MERITOR HEAVY VEHICLE TECHNOLOGY, LLC, MICHIGAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CATANIA, MICHAEL VITO;REEL/FRAME:012367/0900 Effective date: 20011204 |
|
CC | Certificate of correction | ||
AS | Assignment |
Owner name: ARVINMERITOR TECHNOLOGY, LLC, MICHIGAN Free format text: CHANGE OF NAME;ASSIGNOR:MERITOR HEAVY VEHICLE TECHNOLOGY, LLC;REEL/FRAME:018362/0749 Effective date: 20011221 |
|
AS | Assignment |
Owner name: JPMORGAN CHASE BANK, NATIONAL ASSOCIATION, FOR ITS Free format text: SECURITY AGREEMENT;ASSIGNOR:ARVINMERITOR TECHNOLOGY, LLC;REEL/FRAME:018524/0669 Effective date: 20060823 |
|
LAPS | Lapse for failure to pay maintenance fees | ||
STCH | Information on status: patent discontinuation |
Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
|
FP | Lapsed due to failure to pay maintenance fee |
Effective date: 20071118 |
|
AS | Assignment |
Owner name: AXLETECH INTERNATIONAL IP HOLDINGS, LLC, MICHIGAN Free format text: RELEASE BY SECURED PARTY;ASSIGNOR:JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT;REEL/FRAME:061521/0550 Effective date: 20220803 Owner name: MERITOR TECHNOLOGY, LLC, MICHIGAN Free format text: RELEASE BY SECURED PARTY;ASSIGNOR:JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT;REEL/FRAME:061521/0550 Effective date: 20220803 Owner name: MOTOR HEAVY VEHICLE SYSTEMS, LLC, MICHIGAN Free format text: RELEASE BY SECURED PARTY;ASSIGNOR:JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT;REEL/FRAME:061521/0550 Effective date: 20220803 Owner name: ARVINMERITOR OE, LLC, MICHIGAN Free format text: RELEASE BY SECURED PARTY;ASSIGNOR:JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT;REEL/FRAME:061521/0550 Effective date: 20220803 Owner name: MERITOR HEAVY VEHICLE SYSTEMS, LLC, MICHIGAN Free format text: RELEASE BY SECURED PARTY;ASSIGNOR:JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT;REEL/FRAME:061521/0550 Effective date: 20220803 Owner name: ARVINMERITOR TECHNOLOGY, LLC, MICHIGAN Free format text: RELEASE BY SECURED PARTY;ASSIGNOR:JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT;REEL/FRAME:061521/0550 Effective date: 20220803 Owner name: MAREMOUNT CORPORATION, MICHIGAN Free format text: RELEASE BY SECURED PARTY;ASSIGNOR:JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT;REEL/FRAME:061521/0550 Effective date: 20220803 Owner name: EUCLID INDUSTRIES, LLC, MICHIGAN Free format text: RELEASE BY SECURED PARTY;ASSIGNOR:JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT;REEL/FRAME:061521/0550 Effective date: 20220803 Owner name: GABRIEL RIDE CONTROL PRODUCTS, INC., MICHIGAN Free format text: RELEASE BY SECURED PARTY;ASSIGNOR:JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT;REEL/FRAME:061521/0550 Effective date: 20220803 Owner name: ARVIN TECHNOLOGIES, INC., MICHIGAN Free format text: RELEASE BY SECURED PARTY;ASSIGNOR:JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT;REEL/FRAME:061521/0550 Effective date: 20220803 Owner name: MERITOR TRANSMISSION CORPORATION, MICHIGAN Free format text: RELEASE BY SECURED PARTY;ASSIGNOR:JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT;REEL/FRAME:061521/0550 Effective date: 20220803 Owner name: ARVINMERITOR, INC., MICHIGAN Free format text: RELEASE BY SECURED PARTY;ASSIGNOR:JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT;REEL/FRAME:061521/0550 Effective date: 20220803 |